ABsrp~cr: The dissolution of calcium carbonate with both organic and aqueous solvents was examined quantitatively and kinefically. Neither ethanol and nor acetone at 25°C dissolved appreciable aragonite or calcite, even after nearly ten days. Bleach (sodium hypochlorite) was a much less effective solvent than deionized water, producing little or no net calcium in solutions in contact with calcium carbonate. Although exposure to sodium hydroxide solutions also yielded relatively small concentrations of calcium in the fluid, characterization of the exposed carbonate grains by X-ray powder diffraction and by light microscopy revealed extensive replacement of the CaCO3 by Ca(OH)2, calcium hydroxide (portlandite). A solution of Aleonox@, a commercial laboratory anionic detergent, was about half again as potent as deionized water, and hydrogen peroxide proved to be many times more corrosive of calcium carbonate than deionized water.These results are consistent with published and anecdotal observations of the effects of laboratory preparation protocols on calcium carbonate. Our quantitative data permit the researcher to assess the potential for a treatment procedure using any of these solutions to compromise the integrity of a sample of calcium carbonate.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.